code: def test_write_parquet_api(orca_context_fixture):
      test_write_mnist(orca_context_fixture, True)
      test_write_voc(orca_context_fixture, True)
      test_write_from_directory(orca_context_fixture, True)
  
file_path: analytics-zoo/pyzoo/test/zoo/orca/data/test_write_parquet.py
imports: import tempfile
  import shutil
  import numpy
  import os
  from zoo.orca.data.image.parquet_dataset import ParquetDataset
  from zoo.orca.data.image.parquet_dataset import _write_ndarrays, write_from_directory, write_parquet
  from zoo.orca.data.image.utils import DType, FeatureType, SchemaField
  from zoo.orca.learn.tf.estimator import Estimator
  from zoo.orca.data.image import write_mnist, write_voc
label_desc: Use image node_id 9 for calling a global function with example usage: test_write_parquet_api(orca_context_fixture) without return types